Ehhh, wrong answer! Seeing that the number given from the frame, 12869, would be a non-prefix serial number dating this specimin to 1958. Hardly able to get a value from current production model info. As to it's value...much more info would be needed. 1) these Old Models are they're referred to now were offered a factory conversion to add a levl of safety for those ignornat enough to not understand the basic principlas of it's design and operation. If it's had the conversion, value is detracted. 2) the bbl length and top strap (horizontal frame area above the cylinder) also makes a big difference in it's value.

Best bet is to get a picture or two or three and ask this question over on RugerForum.com. You'll get more than you need to know and a darn good assessment of it's value from the Ruger folks there.